今天小编为英语六级备考的同学们整理了知识精析，希望可以为大家带来帮助，一起来学习一下吧。 英语巩固：虚拟语气 1. 表示现在/过去/将来情况的虚拟条件句 虚拟条件句主要有三种结构： 1)表示与现在情况相反：主句谓语用“would / could / might 动词原形”，从句谓语用“动词的一般过去时”(动词be的过去式一律用were)。 If I were you, I would not accept his offer. If I had time, I would certainly go to the cinema with you. 2) 表示与过去情况相反：主句谓语用“would / could / might have 过去分词”，从句谓语用过去完成时。 If I had got up a little earlier, I wouldn’t have missed the train. If I had been more careful, I might have passed that exam. 3) 表示与将来情况相反：主句谓语用“would / could / might 动词原形”，从句谓语用“were 动词不定式”或“should 动词原形”。 If I were to do the job, I would not be able to have enough time to study. If it should rain tomorrow, I would not go out with you. 2. 虚拟条件句连接词if的省略 如果虚拟条件句的从句中含有were, had, should, could等词时，可以省略连接词if，但这时必须把were, had, should, could等词移到主语前面，形成倒装。这种句型主要用于书面形式。 Were I to do the job, I would finish doing it within two weeks. Had it not been for his help, we couldn’t have arrived there on time. Should it rain tomorrow, I would stay at home. 3. wish后宾语从句中的谓语构成 动词wish后的宾语从句表示未实现的或不可能实现的愿望，其宾语从句中的谓语动词要用虚拟语气，有以下三种构成形式。 1) 表示现在不可能实现的愿望，宾语从句中的谓语动词用一般过去时。(be的过去式为were)。 I wish I had enough money to buy a car. I wish I were as young and energetic as you. 2) 表示过去未能实现的愿望，宾语从句中的谓语动词用过去完成时(had 过去分词)或“would / could have 过去分词 ”。 I wish I hadn’t made such a mistake. I wish I could have done it better. 3) 表示将来不可能实现的愿望，宾语从句中的谓语动词用“would / should (could, might) 动词原形”。 I wish I would not get old. I wish I could travel around the world one day.
